Question

the two ropes are used to vertically lower a 255 kg piano from exactly 4 m form a seocnd sotry window to the ground how much work is done by each of the three forces

Answer 1

Complete Question

The Question diagram is attached below

Answer:

a)  $W_{Fg}= 12500 Nm$

b)  $W_{T_1}= - 6339.3Nm$

c)  $W_{T_2}= - 3662.8Nm$

Explanation:

From the question we are told that:

Mass $m=255kg$

Distance $d=4m$

Generally the equation for Work done is mathematically given by

$W=F*d$

For $F_g$

$W_{Fg}=2500 x 5.3$

$W_{Fg}= 12500 Nm$

For $T_1$

$W_{T_1}= - {1830 sin(60) x 4}$

$W_{T_1}= - 6339.3Nm$

For $T_2$

$W_{T_2}= - {1295 sin(45) x 4}$

$W_{T_2}= - 3662.8Nm$