A body of mass 500 g initially at rest is acted upon by a force 10 kgf for 10s,then the velocity acquired by the body is:
200 ms-2
100 ms-2
2000 ms-1
2000 ms-2
Inertial mass mi of a body is given by
F/a
W/g
MG/a
MG/g
A car of mass 7000kg starts from rest and travels a distance 800m in 20s.The force acting on the car will be
2800N
28000N
8000N
24000N
The iron door of a building is 3 m broad. It can be opened by applying a force of 100 N at the middle of the door. Then calculate the least force which can open the door?
50 Nm
150 Nm
200 Nm
250 Nm
The mass of a body under the effect of gravity is measured by
Spring balance
inertial balance
specific balance
physical balance.
What is the relation between gravitational mass mg and inertial mass mi?
mg>mi
mi>mg
mg=mi
None of these
A mechanic can open a nut by applying a force of 150N while using a lever handle of length 40cm. How long handle is required if he wants to open it by applying a force of only 50N?
1.2m
12m
2.4m
0.6m
A body is pivoted. A force of 10 N is applied at a distance of 30 cm from the pivot. Calculate the moment of force about the pivot.
3 Nm
4 Nm
5 Nm
6 Nm
Weight of a body at the poles will be
Greater than that at the equator
Lesser than that at the equator
Equal to that at the equator
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
