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23 Nov 2019
1) The efficiency of a pulley system is 13 percent.
The pulleys are used to raise a mass of 79 kg
to a height of 3.7 m.
The acceleration of gravity is 9.81 m/s2 .
What force is exerted on the rope of the
pulley system if the rope is pulled for 37 m in
order to raise the mass to the required height?
Answer in units of N
2)Consider the rectangular block of mass 25 kg
height 1.7 m, length 0.78 m. A force F is
applied horizontally at the upper edge.What minimum forceisrequired to start to
tip the block? The acceleration of gravity is
9.8 m/s2 .
Answer in units of N.
1) The efficiency of a pulley system is 13 percent.
The pulleys are used to raise a mass of 79 kg
to a height of 3.7 m.
The acceleration of gravity is 9.81 m/s2 .
What force is exerted on the rope of the
pulley system if the rope is pulled for 37 m in
order to raise the mass to the required height?
Answer in units of N
2)Consider the rectangular block of mass 25 kg
height 1.7 m, length 0.78 m. A force F is
applied horizontally at the upper edge.What minimum forceisrequired to start to
tip the block? The acceleration of gravity is
9.8 m/s2 .
Answer in units of N.
