Question

1. A man standing on a spring platform. The reading of the spring balance is 60kg wt. If the
man jumps outside the platform then reading of spring balance will [ ]
a) increase b) remains same c) first increases then becomes zero d) none
2. A person of mass ‘m’ is standing on a weighing machine placed in an elevator, then the
actual weight of the person is mg and reading of the weighing machine is R. When the
elevator is at rest the applicable condition is [ ]
a) R = mg b) R > mg c) R < mg d) R = a
3. A block of mass M is pulled along a horizontal surface by a rope of mass m by applying a
force F at one end of the rope. The force which the rope exerts on the block [ ]
a)
+ b)
− c)
− d)
+�

Answer 1

Answer:

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Answer 2

Answer:

1. (c)zero

2. (b)r is greater than mg

3. (b)+