4 years ago

10. Heat is the transfer of thermal energy from one object to another because of a difference in

Physics

1 answer:

stiv31 [10]4 years ago

7 0

Answer:

Temperature

Explanation:

Heat only flows from one point to the other due to the difference in temperature.

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madreJ [45]

Answer:

Part a)

$L = 0.68 m$

Part b)

$L = 0.63 m$

Explanation:

Part a)

As we know that there is no friction in the path

So here we can use energy conservation to find the distance moved by the mass

Initial spring energy = final gravitational potential energy

so we will have

$\frac{1}{2}kx^2 = mgL sin\theta$

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Part b)

Now if spring is connected to the block then again we can use energy conservation

so we will have

$\frac{1}{2}kx^2 = mg(x + x')sin\theta + \frac{1}{2}kx'^2$

so we will have

$\frac{1}{2}(70)(0.5^2) = 2(9.81) (0.50 + x') sin41 + \frac{1}{2}(70)x'^2$

$8.75 = 6.43 + 12.87 x' + 35 x'^2$

$x' = 0.13 m$

so total distance moved upwards is

$L = 0.5 + 0.13 = 0.63 m$

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