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You pull a 55kg wooden box with a rope that makes a 24 degree angle with the horizontal at a constant speed. The acceleration due to gravity on the box is 9.8 m/s2. You pull the crate a distance of 2.2 m. How much work was done?

Respuesta :

Answer:

Workdone: F x S x Cos(x)

F:mg

m:55kg g: 9.8?m/s²

F: 55 x 9.8

F:539N

Workdone: FS x Sin(x)

F:539N

S: 2.2m

x:24°

539 x 2.2 x Sin(24)

1185.8 x 0.4067

=482.3083J

=482.31J

Explanation:

Sin(x) is used instead of Cos(x) because the 24° angle is to the horizontal.

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