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Leviafan [203]
3 years ago
14

A force of 6 N is used to open a door, wherein the distance of the force to the axis of rotation is 80 cm. If the angular accele

ration it acquires is 0.5 rad/s 2, determine the moment of inertia of the door.
Physics
1 answer:
Luda [366]3 years ago
7 0

Explanation:

∑τ = Iα

(6 N) (0.80 m) = I (0.5 rad/s²)

I = 9.6 kg m²

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The scientists describe them as D. Elliptical
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2 years ago
A 66.0−kg short-track ice skater is racing at a speed of 10.0 m/s when he falls down and slides across the ice into a padded wal
dexar [7]

Answer:

3300J

Explanation:

Work done is the energy that is lost by the skater

Formula for workdone = 1/2*mV^2

m = 66kg

V = 10m/s

Work done = 1/2 * 66 * 10^2

= 3300J

7 0
2 years ago
A car jack with a mechanical advantage of 6 needs to produce an output force of 600 N to raise a car. What input force is requir
Mkey [24]

B.) 100 N is the CORRECT answer


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6 0
3 years ago
Read 2 more answers
A railroad car having a mass of 17.5 Mg is coasting at 1.5 m/s on a horizontal track. At the same time another car having a mass
Leokris [45]

Answer:

Then final velocity of the coupled system of cars will be 0.58 m/s

Explanation: Let us consider the car-1 is moving towards right (say + ve direction) and car-2 is moving towards left (say in - ve direction), accordingly velocity are considered +ve and -ve.

m_{1} = 17.5 \ Mg = 17.5 \times 10^{6} \ g = 17.5 \times 10^{3} \ Kg = 17500 \ Kg

v_{1} = + \ 1.5 \ m/s

m_{2} = 12 \ Mg = 12 \times 10^{6} \ g = 12 \times 10^{3} \ Kg = 12000 \ Kg

v_{2} = - \ 0.75 \ m/s

Applying the conservation of momentum, and let the final velocity of combined system is V m/s

m_{1} \times v_{1} + m_{2} \times v_{2} = (m_{1} + m_{2}) \times V

17500 \times 1.5 \  + 12000 \times (-0.75) = 29500 \times V

26250 - 9000 = 29500 \times V

V = \frac{17250}{29500} = 0.58 m/s

Then final velocity of the coupled system of cars will be 0.58 m/s

8 0
2 years ago
Read 2 more answers
A baseball player throws a ball borontally, which of the following statements best
MariettaO [177]

Answer:

Its vertical speed increases, and its horizontal speed remains the same.

Explanation:

Given that,

A baseball player throws a ball horizontally,

We know that,

A baseball player throws a ball horizontally, then vertical component of gravity will be increases but there is no acceleration in horizontal direction

So, horizontal velocity remains same.

Hence, Its vertical speed increases, and its horizontal speed remains the same.

6 0
2 years ago
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