Do you think all elements are pure substances? Why or why not?
1 answer:
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Answer:
3.6 × 10^5 J
Explanation:
Work Done = Energy
Energy = Power × time
Energy = 200 × 1800
= 360000 J
W =
Answer
given,
mass of the ball = 3 kg
swing in vertical circle with radius = 2 m
work done by the gravity = ?
work done by the tension = ?
Work done by the gravity = - m g Δh
Δ h = 2 + 2 = 4 m
Work done by the gravity =
= -117.6 J
work done by gravity is equal to -117.6 J
Work done by tension will be equal to zero.
Zero because tension is always perpendicular to velocity
work done by tension is equal to 0 J