Mechanical advantage (MA), load and effort related as
MA = L x E
MA x E = L
E = MA x L
None of these
A nut which can be broken by applying a force of 40 kgf is broken by using a nut cracker having its handle 20 cm long by placing it at a distance 2 cm from the hinge. The minimum force needed to break the nut.
4 kgf
5 kgf
2 kgf
3 kgf
Nut cracker is an example for:
Class I lever
Class II lever
Class III lever
Class I & II lever
The ideal mechanical advantage of lever in which the effort arm is 50 cm and load arm is 5 is
10
5
6
7
Claw hammer is an example for:
Both Class I & II lever
MA of a single fixed pulley is
1
2
0
Foot treadle and sugar tongs are examples for:
Seesaw is an example for:
Class I Lever
Class II Lever
Class III Lever
Class I & II Lever
For an ideal machine, the ratio of mechanical advantage (MA) to the velocity ratio (VR) is
greater than 1
less than 1
equal to 1
depends on the value of load
For the above equation find the work done by the falling mass in its displacement by 8 m.
5000 J
1000 J
8000 J
2000 J
