Physics Rotational Mechanics Level: High School
A solid ball , solid cylinder and a hollow pipe all have equal masses and radii . All these items are released simultaneously at the top of an inclined plane , which will reach the bottom first ?None of the listed
Solid cylinder
Solid ball
Hollow pipe
Physics Rotational Mechanics Level: High School
Moment of Inertia
Consider two uniform solid spheres where both have the same diameter , but one has the twice the mass of the other. The ratio of the larger moment of inertia to that of the smaller moment of inertia is ?6
8
4
2
10
Physics Force & Laws Of Motion Level: High School
Momentum
The momentum of a particle is proportional to the square of its velocity .True
False
Physics Misc Topic Level: Misc Level
Impulse
A bullet , of mass 20 g , traveling at 350 m/s , strikes a steel plate at an angle of 30 degree with the plane of the plate . It ricochets off at the same angle at a speed of 320 m/s . What is the magnitude of the impulse that the wall gives to the bullet ?6.7 N s
300 N s
0.52 N s
0.30 N s
Physics Force & Laws Of Motion Level: High School
Conservation of Momentum
A plane flying horizontally , released a bomb , which explodes before hitting the ground . Neglecting air resistance , the centre of mass of the bomb fragments , just after the explosion is ?Zero
Moves horizontally
Moves along a parabolic path
Moves vertically
Physics Work,Power & Energy Level: High School
Conservation of Energy
How fast must a 10.5 g bullet be traveled when it strikes a ballistic pendulum that consists of a block of wood of mass 3.0 kg that is suspended by a cord ? The bullet gets embedded in the block . The block rises by 0.22 m after the impact .595 m/s
2.67 m/s
595 m/s
143 m/s
Physics Force & Laws Of Motion Level: High School
Conservation of Linear Momentum
In an inelastic collision the final total momentum is ?The same as the initial momentum
None of these
Less than the initial momentum
More than the initial momentum
Physics Force & Laws Of Motion Level: High School
Inelastic Collision
A 3 kg ball of putty is moving at 1 m/s collides and stick to a 2 kg ball initially at rest . The putty and the ball then move with a momentum of ?3 N s
0 N s
2 N s
1 N s
4 N s
Physics Force & Laws Of Motion Level: High School
Two cars suffers a head on collision . What is conserved in the collision ?Momentum
Kinetic energy
Mechanical energy and momentum
None of the above
Physics Vectors Level: High School
Which of the following quantity is a vector ?Distance
Mass
Force
Speed
Physics Units Level: High School
1 watt is the same as ---------1 J s
1 N m
1 kg m2/s3
1 kg m2/s2
Physics Measurements Level: High School
If the measuring is recorded as 2+- 0.1 mm . the relative error is ?+- 15%
+-10%
+-5%
+-20%
Physics Force & Laws Of Motion Level: High School
A 200 g object is moving in a circle of radius 4 m with a uniform speed of 6 m/s . The net force acting on the object is ?3.6 N towards the centre of the circle
1.8 N away from the centre of the circle
1.8 N towards the centre of the circle
1.8 N tangential to the circle
Physics Measurements Level: High School
The volume of a cylindrical tank is calculated by measuring its radius as 3 m with a maximum error of +1.5% and the length as 5 m with a maximum error of +1% . The volume of the tank is ?45p + 2.5% m3
45p+ 0.5 m3
45p + 5% m3
45p + 4% m3
Physics Force & Laws Of Motion Level: High School
Pulley and Mass
In an Atwood’s machine experiment , the larger mass is 1.8 kg and the smaller mass is 1.2 kg . Ignoring friction . the acceleration of the masses , when released from rest is ?0.8 g m/s2
0.2 g m/s2
0.6 g m/s2
1.2 g m/s2
