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Serjik [45]
3 years ago
11

A boy pulls with a 92.5 N force on the handle of a 27.5 kg wagon while the handle makes an angle of 35.0 degrees with the horizo

ntal. If friction is negligible, and the boy pulls a total distance of 215.6 m, how much work has the boy done
Physics
1 answer:
sweet [91]3 years ago
8 0

Answer:

W_b \approx 16336J

Explanation:

From the question we are told that

Force of pull F= 92.5

Weight of handle W_h=27.5 kg

Angle of handle \angle =35.0

Distance d=215.6 m

Generally the work done by the boy can mathematically be represented as

W_b=F*dcos \theta

W_b=92.5*27.5 *cos(35)

Therefore

W_b=16336.34922J

W_b \approx 16336J

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3 years ago
Once the merry-go-round travels at this new angular speed, with what force does the person need to hold on?.
natita [175]

For a merry go round with a radius of R=1.8 m and moment of inertia I=184 kg-m^2 is spinning with an initial angular speed of w=1.48 rad/s   is mathematically given as

F= 618.9 N

<h3>What is the centripetal force?</h3>

Generally, the equation for the angular speed  is mathematically given as

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Therefore

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Read more about mass

brainly.com/question/15959704

CQ

Flag

a merry go round with a radius of R=1.8 m and moment of inertia I=184 kg-m^2 is spinning with an initial angular speed of w=1.48 rad/s in the counter clockwise direction when viewed from above a person with mass m=76 kg and velocity v=4.7 m/s runs on a path tangent to the merry go round once at the merry go round the person jumps on and holds on to the rim of the merry go round angular speed of the merry go round after the person jumps on 2.127 rad/s Once the merry go round travels at this new angular speed with what force does the person need to hold on?

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