3 years ago

What is the answer to this problem

Physics

1 answer:

OverLord2011 [107]3 years ago

5 0

Answer:

Explanation:

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The blade of a lawn mower is rotating at an angular speed of 128 rad/s. The tangential speed of the outer edge of the blade is 3

stiv31 [10]

Answer:

0.25m

Explanation:

Using the expression that relates the angular velocity(w) and the linear velocity (v).

v= wr where;

w is the angular speed= 128rad/s

v is the linear speed = 32m/s

r is the radius

r = v/w

r = 32/128

r = 0.25m

The radius of the blade is 0.25m

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3 years ago

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Citrus2011 [14]

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2 years ago

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Living organisms, such as people and other animals and our Earth's

cluponka [151]

Answer:

true

Explanation:

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3 years ago

Describe the transformation of mechanical energy in a ball when it is thrown straight up and then comes back down

zhenek [66]

I believe that the mechanical energy would transform from starting out as kinetic, the reaching the top it would be potential, then go back to kinetic as it is falling back down.

I'm not 100% sure that this is right but if I had to take a guess this is what I would say.

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3 years ago

WILL GIVE BRAINLIEST

Andrew [12]

Answer:

28 N

Explanation:

According to Newton's second law of motion

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

in another form,

Force = mass * acceleration

assuming mass is a constant since considering the same object , we can say

Force ∝ acceleration

$\frac{F_1}{F_2} =\frac{a_1}{a_2}\\ \\\frac{63}{F_2} =\frac{9}{4} \\F_2=28 N$

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3 years ago