The measure of the amount of matter maintained in a body is called
Weight of the object
Gravity of the object
Mass of the object
All the above
Force generated by machines is called
Muscular force
Contact force
Mechanical force
Force acting at a distance
Which force is exerted when a moving object collides with a stationary object?
Non - Contact force
Frictional force
Impact force
Gravitational force
Which of the following is a force which opposes relative motion between two surfaces in contact with each other?
Friction
Magnetic force
Non - contact force
Which of the following prevents the spring from stretching beyond its elastic limit?
Metre - scale
Spring balance
Weight the object
None of these
The SI Unit of force is
Newton ( N)
Joule ( J )
Kilogram ( Kg)
Pascal
Which of the following increases friction?
By polishing
By lubrication
By using wheels and ball bearings
By applying sand and gravel on slippery ground
Which of the following is a wrong statement?
A force may bring a change in the state of motion of an object
A force always results in a change in the state of motion
A force changes the speed of an object
A force changes the direction of motion of an object
Which of the following a contact force?
Electrostatic force
Which of the following is the force with which a body gets attracted to the centre of the Earth?
Weight
Tension