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Force Test - 6

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Force Test - 6
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Weekly Quiz Competition
  • Question 1
    1 / -0
    In which of the following cases are the forces acting on the body balanced?
    Solution
    If the forces acting on a body are balanced, then the net force acting on the body will be zero and the body will either move with a constant velocity or be at rest.
    Option 2 is the correct answer as the body is moving with constant velocity.
  • Question 2
    1 / -0
    Two forces of 9 N and 6 N act on a body in downward direction, while another force of 15 N acts on the body in upward direction. What is the resultant of the forces?
  • Question 3
    1 / -0
    Two children try to push a box on a rough floor. The sum of the forces applied by both of them is 7 N and the force of friction is 3N. Based on that, which of the following statements is correct?
    Solution
    As the total force applied by the children is greater than the opposing (friction) force, the box will move in the direction of the force applied by the children.
    Net force = 7 N - 3 N = 4 N
  • Question 4
    1 / -0
    A body of mass 200 g is resting on a frictionless table. What is the acceleration of the body, when it is acted upon by a force of 0.05 N?
  • Question 5
    1 / -0
    A ball of mass 20 g is initially moving with a velocity of 25 ms-1. On applying a constant force on the ball for 2 s, it acquires a velocity of 65 ms-1. What is the magnitude of the force applied?
  • Question 6
    1 / -0
    On applying a force of 2 N on masses m1 and m2, it produces acceleration of 5 ms-2 and 10 ms-2, respectively. Calculate the acceleration, when both the masses are tied together.
  • Question 7
    1 / -0
    A force F1 is required for accelerating a 3 kg mass accelerating at the rate of ms-2 and a force F2 for a 6 kg mass at the rate of 2 ms-2.
    Choose the correct option.
  • Question 8
    1 / -0
    A force `F` is required to accelerate a body of mass `m` at 10 ms-2. What is the force required to accelerate a body of mass `2m` at the rate of 20 ms-2?
  • Question 9
    1 / -0
    When a bus suddenly starts, a person standing in it will
  • Question 10
    1 / -0
    In the case of motors and lorries moving along a bend, the centripetal force is provided by
  • Question 11
    1 / -0
    A body of mass 2 kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal table. The force required to keep the body moving with the same velocity is
  • Question 12
    1 / -0
    In a game of snooker, two balls each of mass 200 g are moving in the same straight line but in the opposite directions with a velocity of 2 ms-1 each. The balls then collide and stick together.
    What is the velocity of combined balls after the collision?
  • Question 13
    1 / -0
    A ball of mass 2 kg bounces with a horizontal velocity of 2 ms-1 in a stationary box with frictionless wheels. The mass of the box is 6 kg. What will be the velocity of the ball as the box starts moving?
  • Question 14
    1 / -0
    A body of weight w1 is suspended from the ceiling of a room using a chain of weight w2. What is the force with which the ceiling pulls the chain?
  • Question 15
    1 / -0
    Two blocks of masses 6 kg and 8 kg respectively, connected by a rope of mass 4 kg are resting on a frictionless floor as shown in the figure. If a constant force of 90N is applied to the block of mass 8 kg, what is the acceleration of the system and tension in the rope at mid point A?

  • Question 16
    1 / -0
    Two blocks of an identical material are connected by a light rope on a level surface as shown in the figure. An applied force of 65 N (right) produces acceleration in the blocks. While in motion, the magnitude of the force of friction on the blocks is 55N. What is acceleration of the blocks?

  • Question 17
    1 / -0
    Three boxes A, B and C are positioned next to each other on a horizontal frictionless surface as shown in the figure. An applied force acting on box A causes all the boxes to accelerate at 2 ms-2. What is the force exerted by box C on box B?

  • Question 18
    1 / -0
    Two blocks X and Y of masses 10 kg and 5 kg respectively, are attached to each other by a light rope and can slide along a horizontal frictionless surface. An applied force of 36 N (right) acts on block X. What action-reaction forces do the blocks exert on each other?

  • Question 19
    1 / -0
    A scooter generally slips on an oily road because
  • Question 20
    1 / -0
    Work done by a body against friction 1 always results in a loss of its
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