Advertisements
Advertisements
प्रश्न
A mechanic unscrew a nut by applying a force of 140 N with a spanner of length 40 cm. What should be the length of the spanner if a force of 40 N is applied to unscrew the same nut?
Advertisements
उत्तर
Given F1 = 140 N, d1 = 40 cm, F2 = 40 N, d2 = ?
In, both the cases, moment of forces applied are equal
F1d1 = F2d2
d2 = `("F"_1/"F"_2)` d1
d2 = 40 × `140/40` = 140cm
APPEARS IN
संबंधित प्रश्न
Give one example in the given cases:
A force stops a moving body
Give one example in the given cases:-
A force moves a stationary body
Complete the following sentence:
The mass of a body remains constant till the velocity of the body is ..........
Complete the following
Newton is the unit of .................
A body of mass 1.5 kg is dropped from a height of 12 m. What is the force acting on it during its fall? (g = 9.8 ms−2)
A body of mass 50g is moving with the velocity of 10 ms-1. It is brought to rest by a resistive force of 10 N Find.
1) the retardation and
2) the distance that the body will travel after the resistive force is applied.
How do you define force? What are the forces acting on a man standing in a lift? If the lift moves down with an acceleration of 2 ms−2, what is the net force on the man if his mass is 50 kg?
______ has to be applied to change the ______ of a ______ object.
(moving, direction, force)
Which of the following statement is not correct for an object moving along a straight path in an accelerated motion?
Write true and false.
If mass increases, force decreases.
