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1.How much work do you do by pushing a sack of gravel with a force of 200 N across the distance of ten meters?

2. Gelo Climbs a stairs in 2 minutes. If he weighs 400 N and the stairs is 15 m from the ground, how much power will he develop

Sagot :

Tokamakgo

Problem 1:

Given:

F = 200 N

d = 10 m

Required:

P

Solution:

W = Fd

W = (200 N)(10 m)

[tex]\boxed{W = \text{2,000 J}}[/tex]

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Problem 2:

Given:

F = 400 N

d = 15 m

t = 2 min = 120 s

Required:

P

Solution:

Step 1: Solve for W.

W = Fd

W = (400 N)(15 m)

W = 6,000 J

Step 2: Solve for P.

[tex]P = \dfrac{W}{t}[/tex]

[tex]P = \dfrac{\text{6,000 J}}{\text{120 s}}[/tex]

[tex]\boxed{P = \text{50 W}}[/tex]

[tex]\\[/tex]

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