Objects fall towards the earth because of
Frictional force
Gravitational force
Magnetic force
Contact force
Which of the following increases friction?
By polishing
By lubrication
By using wheels and ball bearings
By applying sand and gravel on slippery ground
Friction depends on
Nature of surfaces in contact
Weight of the object
Both a and b
Area of surface
Which of the following is a strain force that is exerted by a stretched spring, rope or string?
Friction
Tension
Pull
Push
The measure of the amount of matter maintained in a body is called
Gravity of the object
Mass of the object
All the above
The weight of 1 kg mass is
I N
10 N
100 N
0.1N
The SI unit of force is named after which scientist?
Albert Einstein
Isaac Newton
Blaise pascal
James Watt
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 is the force with which a body gets attracted to the centre of the Earth?
Weight
Which of the following prevents the spring from stretching beyond its elastic limit?
Metre - scale
Spring balance
Weight the object
None of these
