Physics Force & Laws Of Motion Level: Misc Level
Another scheme to catch the roadrunner has failed .Now a safe falls from rest from the top of a 20. 5 meter high cliff toward wile E.Coyote, who is standing at the base. wile first notices the safe after it has fallen 16.0 meters. How long does he have to get out of the way? The free fall acceleration is 9. 80 m/s^2
Physics Force & Laws Of Motion Level: Misc Level
A plastic block of dimensions 2.00 cm x 3.00 cm x 4.00 cm It has a density of 1.25 g/cm3? What is the maximum pressure it can exert on a horizontal surface?
Physics Force & Laws Of Motion Level: Misc Level
A uniform rod is placed such that its lower end rests on a rough floor and its upper end rests against a perfectly smooth wall. The angle between the rod and the floor is theta. Show that the minimum coefficient of static friction between the rod and the floor is 1/2 tan theta.
Physics Force & Laws Of Motion Level: Misc Level
A uniform rod is placed such that its lower end rests on a rough floor and its upper end rests against a perfectly smooth wall. The angle between the rod and the floor is theta. Show that the minimum coefficient of static friction between the rod and the floor is 1/2 tan theta.
Physics Force & Laws Of Motion Level: Misc Level
A coin of mass (m) rests on a turntable some distance (r) from the axis of rotation. The turntable rotates with angular velocity (w). Derive an expression in terms of these" givens" for the minimum coefficent of static friction between the turntable and the coin, if the coin is not to slip.
Physics Force & Laws Of Motion Level: Misc Level
Find the ratio m/mo for an object at the following speeds: a) 0. 10 c b) 0. 30 c c) 0. 70 c d) 0.90 c
Physics Force & Laws Of Motion Level: Misc Level
Josie and Charlotte push a 9 kg bag of playground sand for a sandbox on a friction less, horizontal ,wet polyvinyl surface with a constant, horizontal force for a distance of 8 m, starting from rest, If the final speed of the sand bag is 0.39 m/s , what is the magnitude of the force with which they pushed?
Physics Force & Laws Of Motion Level: Misc Level
A 4.0 kg ball moving to the right at 6.0 m/s makes an elastic collision with a 2.0 kg ball moving to right at 3.0 m/s Find the velocity of the 4 kg ball after collision.
Physics Force & Laws Of Motion Level: Misc Level
A boy whose mass is 35.0 kg and a girl whose mass is 25.0 kg face each other inititially at rest on frictionless roller skates. The boy pushes the girl, who moves away at a speed of 1. 50 m/s. what is the boys speed?
Physics Force & Laws Of Motion Level: Misc Level
A 2.00 kg block on a frictionless plane inclined at (30 degrees)from the horizontal has a force of magnitude P acting on it upward parallel to the incline. Nevertheless the block is accelerating downward at 2.00 m/second square (only the second is squared). Calculate P.
Physics Force & Laws Of Motion Level: Misc Level
Two forces act on a block of mass 4.5 kg resting on a frictionless,horizontal surface. The horizontal force is 3.7 N: the other force of 5.9 N acts at an angle of (43 degrees) from the horizontal. what is the magnitude of the acceleration of the block?
Physics Force & Laws Of Motion Level: Misc Level
A 810 kg car accelerates from rest to 27 m/s in a distance of 120 m. what is the magnitude of the average net force acting on the car?
Physics Force & Laws Of Motion Level: Misc Level
(b) For a banked curve with friction, the frictional force on a fast- moving car is directed down the bank.If the coefficient of static friction between the tires and ground is ? s, what is the maximum speed a car can safely maintain on the curve? Give numerical answers for ? s =0.050. (This explains why highway curves are more dangerous when wet or icy)
Physics Force & Laws Of Motion Level: Misc Level
A force that is acting on a particle has a magnitude of 75. 0 N and its direction is at an angle of 30 degrees to the left of the negative y - axis. what is the x - component of the acceleration of the particle if its mass is 125. 0 kg?
Physics Force & Laws Of Motion Level: Misc Level
Questions:1. A ladder of length L and weight w rests on a rough floor and against a frictionless wall. The coefficient of static friction at the floor is 0.6........(a) find the maximum angle between the ladder and the wall such that the ladder does not slip.
(b) The force exerted by the wall at this angle.
