If the mass of a body is increased,force remaining constant,the acceleration
increases
decreases
remains some
None of these
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
The moment of a force of 10N about a fixed point O is 5Nm. Calculate the distance of the point O from the line of action of the force.
5m
2m
0.5m
50m
With increase in mass,the weight of bodies
decrease
Cannot be predicted
A nut is opened by a wrench of length 10cm. If the least force required is 5.0N. Then the moment of force needed to turn the nut is
50 Nm
0.5 Nm
0.05 Nm
500 Nm
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
With increase in mass , inertia of a body
does not change
changes irregularly
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
A 8000kg vehicle moving with a speed of 10m/s is brought to rest at a distance of 50m by the application of breaks.The force acted on the vehicle is
-800N
-8000N
+8000N
+800N
Weight of a man on earth is 686 N. If gm = 1.65 ms-2 his weight on moon will be
70 N
70 kg
114.1 kg
115.5 N
