Why do truckers use a ramp when loading a truck if the work required is the same with or without a ramp?

Physics

1 answer:

RoseWind [281]3 years ago

7 0

Shut up no one is going to help u

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belka [17]

Answer:v=7.46 m/s

Explanation:

Given

mass of stone=0.7 kg

Length of string=0.6 m

Maximum tension in string T=65 N

Tension will Provide centripetal force i.e. $\frac{mv^2}{r}$

$T=\frac{mv^2}{r}$

$65=\frac{0.7\times v^2}{0.6}$

$65\times 0.6=0.7\times v^2$

$v^2=\frac{65\times 0.6}{0.7}$

$v^2=55.71$

$v=\sqrt{55.71}=7.46 m/s$

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2 years ago

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Which of two factors influence the weight of an object due to gravitational pull?

densk [106]

The weight of an object when calculated by multiplying with the pull of the gravity is dependent on the mass of the object and the value of g. The value of g is constant however is still dependent on the distance of the object from the center of the Earth. Thus, the answers are mass and distance. 

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Type the correct answer in the box. Round your answer to the nearest whole number. Calculate the man’s mass. (Use PE = m × g × h

Blababa [14]

Answer:

56 kg

Explanation:

The change in potential energy of the man is given by:

$\Delta U = mg \Delta h$