Question

5. An inclined plane is 4 meters long and 1 meter high. A force of 1200 N is needed to move a 3200 N box.
a. Calculate input work.
b. Calculate output work.
c. Calculate IMA.
d. Calculate AMA.
e. Calculate the efficiency of the machine.

Answer 1

a)

$$W_i=1200(4)=4800\ J$$

b)

$$W_o=3200(1)\frac{}{}=3200\ J$$

c)

$$IMA=\frac{4}{1}=4$$

d)

$$AMA=\frac{3200}{1200}=2.67$$

e)

$$\eta=\frac{3200}{4800}=0.67$$