A truck and a car are moving with equal velocity. If equal retarding force is applied on each, then on applying the brakes both will stop after certain distance 

(1) Truck will cover less distance before rest

(2) Car will cover less distance before rest

(3) Both will cover equal distance

(4) None

Subtopic:  Newton's Laws |
From NCERT
PMT - 1997
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A constant force acts on a body of mass 0.9 kg at rest for 10s. If the body moves a distance of 250 m, the magnitude of the force is 

(1) 3 N

(2) 3.5 N

(3) 4.0 N

(4) 4.5 N

Subtopic:  Newton's Laws |
 80%
From NCERT
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A body of 5 kg is moving with a velocity of 20 m/s. If a force of 100 N is applied on it for 10 sec in the same direction as its velocity, what will now be the velocity of the body?

(1) 200 m/s

(2) 220 m/s

(3) 240 m/s

(4) 260 m/s

Subtopic:  Newton's Laws |
 84%
From NCERT
PMT - 2000
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A cyclist turns around a curve at 15 miles/hour. If he turns at double the speed, the tendency to overturn is  

(1) Doubled

(2) Quadrupled

(3) Halved

(4) Unchanged

Subtopic:  Uniform Circular Motion |
 61%
From NCERT
PMT - 1974
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If the overbridge is concave instead of being convex, the thrust on the road at the lowest position will be

(1) mg+mv2r

(2) mgmv2r

(3) m2v2gr

(4) v2gr

Subtopic:  Uniform Circular Motion |
 69%
From NCERT
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A car sometimes overturns while taking a turn. When it overturns, it is:

(1) the inner wheel which leaves the ground first.

(2) the outer wheel which leaves the ground first.

(3) both the wheels leave the ground simultaneously.

(4) either wheel leaves the ground first.

Subtopic:  Uniform Circular Motion |
From NCERT
PMT - 2003
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A motor cyclist moving with a velocity of 72 km/hour on a flat road takes a turn on the road at a point where the radius of curvature of the road is 20 meters. The acceleration due to gravity is 10 m/sec2. In order to avoid skidding, he must not bend with respect to the vertical plane by an angle greater than 

(1) θ=tan16

(2) θ=tan12

(3) θ=tan125.92

(4) θ=tan14

Subtopic:  Uniform Circular Motion |
 77%
PMT - 1986
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A particle moves in a circular orbit under the action of a central attractive force inversely proportional to the distance ‘r’. The speed of the particle is 

(1) Proportional to r2

(2) Independent of r

(3) Proportional to r

(4) Proportional to 1/r

Subtopic:  Uniform Circular Motion |
From NCERT
PMT - 1995
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Two masses M and m are attached to a vertical axis by weightless threads of combined length l. They are set in rotational motion in a horizontal plane about this axis with constant angular velocity ω. If the tensions in the threads are the same during motion, the distance 'x' of M from the axis is- 

(1) MlM+m

(2) mlM+m

(3) M+mMl

(4) M+mml

Subtopic:  Uniform Circular Motion |
 64%
From NCERT
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A 500 kg car takes a round turn of radius 50 m with a velocity of 36 km/hr. The centripetal force is 

(1) 250 N

(2) 750 N

(3) 1000 N

(4) 1200 N

Subtopic:  Uniform Circular Motion |
 86%
From NCERT
PMT - 1999
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