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3 years ago

A 950 N skydiver jumps from an altitude of 3000 m. What is the total work performed on the skydiver?

Physics

1 answer:

pentagon [3]3 years ago

6 0

Answer:

2850000J

Explanation:

Given parameters:

Weight of diver = 950N

Altitude = 3000N

Unknown:

Total work done by the sky diver = ?

Solution:

To solve this problem, we use the expression:

Work done = Weight x height

Now insert the parameters:

Work done = 950 x 3000 = 2850000J

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A 6.2 kg ladder, 1.97 m long, rests on two sawhorses. Sawhorse A is 0.64 m from one end of the ladder, and sawhorse B is 0.17 m

Keith_Richards [23]

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Distance of sawhorse B from other end=0.17 m

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Torque applied on Sawhorse B= $0.815F_b$

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$0.345F_a=0.815F_b$

$F_b=\frac{0.345}{0.815}F_a$

Total force= $F_a+F_b$

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$\frac{0.815F_a+0.345F_a}{0.815}=60.76$

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$F_a=\frac{60.76\times 0.815}{1.16}=42.69 N$

$F_b=\frac{0.345}{0.815}\times 42.69=18.07 N$

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