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2 years ago

Help me out guysI'm stuck in this

Physics

1 answer:

Juli2301 [7.4K]2 years ago

6 0

Answer: The answer will be R1 = B

Explanation:

Cause Here x component of A = A

X component of 2B = 2BcosФ

X component of Resultant = 0

I.e. A + 2BcosФ = 0

cosФ = -A/2B

also R1 = √(A² + B² + 2ABcosФ)

=√ [A² + B² + 2AB(-A/2B)]

=√A² + B² -A²

R1 = √B²

R1 = B so R1 = B is correct.

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3 years ago

4) A cannon shoots a cannonball of mass 5kg vertically upward from the mouth of a cannon with muzzle velocity of 7 m/s. At a hei

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h =220 m

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u = 7 m/s

Even mass will attach but this will not produce any effect on the maximum height of the ball.Because in energy conservation the effect of mass does not present.

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49 = 20 ( 25 +h)

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2 years ago

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Answer:

13 m/s

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to find PE = mgh we need to know h

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7 0

2 years ago

Help me out guysI'm stuck in this ​

Help me out guysI'm stuck in this