Physics Force & Laws Of Motion Level: University
Equation of MotionSome engineering students are challenged to design a cotainer allowing them to drop an egg from a 10.0 m high dormitary roof without the egg breaking. They first wanted to dertermine that indeed without a container the egg will break if dropped. Just as they drop of the egg student carrying a load of laundry comes out of the door of the dormitary 3m away from the drop zone. The top of the pile of the laundry is 1.00m above the ground. The student is walking 1.50 m/s. A) will this student mess up the plan to see if the egg breaks? (i.e. will the egg fall in the laundry basket and not break assume basket and student are in the same place rather than the basket being held out a distance in front of the student? If not how far away will the egg land from the student? B) After that trial the students decided to try again. This time right as they drop the egg another student cames out of the same door with a load of laundry( whos top of the pile is again 1.00 above the group). This student is walking at 1.25/s. 0.5 seconds after the egg is dropped (and he exits the building) the student carrying laundry notices what has happened and decides to try to insure the egg falls in the basket 1) Does the student need to change his velocity? If so. 2) Find the acceleration?
Physics Force & Laws Of Motion Level: University
FrictionA car approaches a level circular curve ( radius + 60.0m). If the coefficient of static friction is 0.7, what is the maximum speed at which the car negotiates the curve at constant speed without skidding?
Physics Force & Laws Of Motion Level: University
Projectile MotionIn the egg toss two people toss araw egg back and forth as they move farther apart. If the force required to break the eggs shell is about 5N and the mass of the egg is 50g, estimate the maximum separation distance for the egg throwers. Make whatever reaonable assumptions you need about the launch angle and hand movement.
Physics Force & Laws Of Motion Level: University
FrictionA 10-kg is set moving with a constant speed of 6 m/s on a rough horizontal
surface
If the force of friction is 20N, approximately how far does the block travels before it stops?
Physics Force & Laws Of Motion Level: University
Component of vectorA hanging sign which weighs 50 N is pished out from the wall by a bracket and supported by a rope tied to the wall. The rope makes an angle of 30 degrees with the wall. Find the force of tention in the rope.
Physics Force & Laws Of Motion Level: University
VectorAn Airplane is flying towards a destination 320 km due east of its starting point. There is a wind of 50 km/h from the northwest ( towards bearing 135). The pilot wishes to make the trip in 40 minutes. What should his airspeed vector be? ( The diagram is essential)
Physics Force & Laws Of Motion Level: University
VectorSarah rows a boat across a river that is flowing at a steady 3km/h.She keeps the boat pointing straight across maintaining a rowing speed of 5 km/h. The river is 1 km wide.
a. From a vector diagram find the actual crossing speed and direction of sarah's boat.
b. Find the time it takes to cross the river
c. Find the distance down river that sarah reaches the shore.
Physics Force & Laws Of Motion Level: University
VectorA rock of a weight 200N is resting on an incline which makes an angle of 30 degrees to the horizontal. Find the component of the weight force that makes the rock inclined to slide down the incline.
Physics Force & Laws Of Motion Level: University
VectorGiven the vectors A (10N) and B (8N) at an angle of 143 degrees to each other. Find the vector A-B
Physics Force & Laws Of Motion Level: University
VectorFind the resultant of two forces 5N and 6N. at an angle of 20 degrees to each other.
Physics Force & Laws Of Motion Level: University
FrictionA rope connects boat A to Boat B. Boat A starts from rest and accelerates to a speed of 9.5m/s in a time of 47 s. The mass of Boat B is 540 kg. Assuming a constant frictional force of 230N on Boat B what is the magnitude of the tension in the rope that connects the boats during the time of acceleration?
Physics Force & Laws Of Motion Level: University
Law of MotionA 20 kg object is held vertically from a fixed plank by two vertical ropes. What is the tension in each rope?
Physics Force & Laws Of Motion Level: University
Laws of MotionA 10 kg block is moving at a constant speed of 6 m/s horizontally on a rough surface. If the force of friction is 20N approx how far will the block travel before it stops?
Physics Force & Laws Of Motion Level: University
Spring ForceA favorite piece of exercise equipment consists of various springs. In one exercise a person pulls a handle grip attached to the free end of a spring to 0.80m from the unstrained position. The other end of the spring ( spring constant is 53 N/m) is held in place by the equipment frame. What is the magnitude of the force that is applied to the handle grip?
Physics Force & Laws Of Motion Level: University
Connected MotionA box of ant aunts ( total mass m1 = 1.11 kg) and a box of ant uncles ( total mass m2 = 3.33 kg) slide down an inclined plane while attached by a massless rod parallel to the plane ( the box of ant aunts is higher up on the plane than the box of ant uncles). The angle of incline is = 34 degree. The coefficient of kinetic friction between the aunt box and the incline is m1 = 0.227 that between the uncle box and the incline is m2 = 0.193. Compute (a) The tension in the rod and (b) The common acceleration of the two boxes.
