हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान कक्षा ११

A Smooth Wedge a is Fitted in a Chamber Hanging from a Fixed Ceiling Near the Earth'S Surface. a Block B Placed at the Top of the Wedge Takes Time T to Slide Down the L - Physics

Advertisements
Advertisements

प्रश्न

A smooth wedge A is fitted in a chamber hanging from a fixed ceiling near the earth's surface. A block B placed at the top of the wedge takes time T to slide down the length of the wedge. If the block is placed at the top of the wedge and the cable supporting the chamber is broken at the same instant, the block will.

विकल्प

  •  take a time longer than T to slide down the wedge

  • take a time shorter than T to slide down the wedge

  • remain at the top of the wedge

  • jump off the wedge

MCQ
Advertisements

उत्तर

remain at the top of the wedge

Downward gravitational force will be balanced by the upward pseudo force (because of the motion of the wedge in downward direction). The block will remain at its position, as both the box and the inclined plane are falling with the same acceleration (g). 

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 5: Newton's Laws of Motion - MCQ [पृष्ठ ७८]

APPEARS IN

एचसी वर्मा Concepts of Physics Vol. 1 [English] Class 11 and 12
अध्याय 5 Newton's Laws of Motion
MCQ | Q 11 | पृष्ठ ७८

संबंधित प्रश्न

A block of mass m is placed on a smooth wedge of inclination θ. The whole system is accelerated horizontally so that the block does not slip on the wedge. The force exerted by the wedge on the block has a magnitude.


Two objects A and B are thrown upward simultaneously with the same speed. The mass of A is greater than that of B. Suppose the air exerts a constant and equal force of resistance on the two bodies.


A free 238U nucleus kept in a train emits an alpha particle. When the train is stationary, a nucleus decays and a passenger measures that the separation between the alpha particle and the recoiling nucleus becomes x at time t after the decay. If the decay takes place while the train is moving at a uniform velocity v, the distance between the alpha particle and the recoiling nucleus at a time t after the decay, as measured by the passenger, is


Suppose the ceiling in the previous problem is that of an elevator which is going up with an acceleration of 2.0 m/s2. Find the elongation.


A constant force F = m2g/2 is applied on the block of mass m1 as shown in the following figure. The string and the pulley are light and the surface of the table is smooth. Find the acceleration of m1.


Calculate the tension in the string shown in the following figure. The pulley and the string are light and all the surfaces are frictionless. Take g = 10 m/s2.


Consider the situation shown in the following figure. Both the pulleys and the string are light and all the surfaces are frictionless.

  1. Find the acceleration of the mass M.
  2. Find the tension in the string.
  3. Calculate the force exerted by the clamp on the pulley A in the figure.


The monkey B, shown in the following figure, is holding on to the tail of monkey A that is climbing up a rope. The masses of monkeys A and B are 5 kg and 2 kg, respectively. If A can tolerate a tension of 30 N in its tail, what force should it apply on the rope in order to carry monkey B with it? Take g = 10 m/s2.


The correct form of Newton's second law is : 


Multiple Choice Question. Select the correct option.

The impulse of a body is equal to:


Multiple Choice Question. Select the correct option.

Which of the following are vector quantities?


What do you mean by linear momentum of a body?


Why is it advantageous to turn before taking a long jump?


What do you mean by the conservation of momentum? Briefly, explain the collision between two bodies and the conservation of momentum.


In the previous problem (5.3), the magnitude of the momentum transferred during the hit is ______.


A hockey player is moving northward and suddenly turns westward with the same speed to avoid an opponent. The force that acts on the player is ______.


A body of mass 2 kg travels according to the law x(t) = pt + qt2 + rt3 where p = 3 ms−1, q = 4 ms−2 and r = 5 ms−3. The force acting on the body at t = 2 seconds is ______.


Why does a child feel more pain when she falls down on a hard cement floor, than when she falls on the soft muddy ground in the garden?


According to Newton's Second Law of Motion, what quantity is directly proportional to the applied force?


What happens when a car brakes to come to a stop?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×