With increase in mass,the weight of bodies
increases
decrease
remains some
Cannot be predicted
Which of the following is not the 'Force at a distance?
Electrostatic force
Gravitational force
Frictional force
Magnetic force
A ball of mass 100 g is moving with a velocity 10 ms-1. It is brought to rest after traveling a distance 5 m, by applying a resistive force. Then the retardation caused by the force is:
1 ms-1
10 ms-2
10 ms-1
- 10 ms-2
What is the unit of rate of of change of momentum?
Kgm / s
Nm / s
N
kgms
A ball of mass 100g is moving with a velocity 10 m51. It is brought to rest after traveling a distance 5 m, by applying a resistive force. Then the resistance force applied is:
10 N
-1 N
0.10 N
1 N
The weight of a body at the centre of the earth is
maximum
minimum
zero
none of the above
In a vaccum chamber if a coin and feather are dropped from a height at the same time,which of them reach the bottom surface first?
coin
feather
both of them reach the bottom at the same time
cannot be predicted
The rate of change of linear momentum of a body is directly proportional to
mass of the body
gravitational force
external force applied to the body
acceleration produced
A uniform metre rule rests horizontally on a knife edge at the 60cm mark. When a mass of log is suspended from one end. Then what is the mass of the rule?
20g
50g
40g
60g
A body of mass 1.50 kg is dropped from a height of 12 m. Then the force acting on it during its fall is ____________ .(take g = 9.8 ms-2)
1.46 N
14.7 N
147.6 N
0.147 N