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galben [10]
3 years ago
10

A sled is dragged along a horizontal path at a constant speed of 1.50 m/s by a rope that is inclined at an angle of 30.0° with r

espect to the horizontal. The total weight of the sled is 470 N. The tension in the rope is 230 N. How much work is done by the rope on the sled in a time interval of 10.0 s?
Physics
1 answer:
Allisa [31]3 years ago
4 0

Answer:2987.7 J

Explanation:

Given

sled weight is W=470 N

Tension in rope T=230 N

Time interval t=10 s

velocity of sled v=1.5 m/s

here speed is equal to velocity which is constant therefore acceleration is zero

thus F_{net}=0

Distance traveled in t=10 s

x=v\times t=1.5\times 10=15 m

considering surface to be friction less

thus T\cos 30 will do work on sled

W=F\cdot x

W=T\cos 30\cdot x

W=230\cos 30\times 15

W=2987.78 J\approx 2.987 kJ

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What is the gravitational potential energy of a 0.550-kg projectile flying with 335 m/s, 72 meters above the ground?
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G.P.E = 0.550 * 9.8 * 72

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3 years ago
If a simple truss member is known to carry a tensile force, then the internal force drawn on a free-body at a section cut when u
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Work needed = 23,520 J

<h3>Further explanation</h3>

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Required

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