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3 years ago

Which changes would result in decrease in the gravitational force between the two objects?

Physics

2 answers:

sladkih [1.3K]3 years ago

7 0

Moving them away from each other or changing their mass

Naddika [18.5K]3 years ago

7 0

-- decrease one mass

-- decrease the other mass

-- move the two objects farther apart

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A uniform hollow spherical ball of mass 1.75 kg and radius 40.0 cm rolls without slipping up a ramp that rises at 30.0° above th

chubhunter [2.5K]

Answer:

The acceleration of the ball's center of mass = 2.94 m/s²

Explanation:

The speed of the ball at the base of the ramp, v = 2.63 m/s

Mass of the ball = 1.75 kg

Radius of the ball, R = 40 cm = 0.4 m

In this motion, potential energy due to the height of the ball is converted to linear angular kinetic energy

Based on the law of energy conservation

Potential energy = Linear KE + angular KE

KE = kinetic Energy

Linear KE = 0.5 mv²

Linear KE = 0.5 * 1.75 * 2.63²

Linear KE = 6.052 J

Angular KE = 0.5 Iω²

I = 2/ 3 MR² = 0.667 * 1.75 * 0.4²

I = 0.187 N.s

ω = V/R = 2.63/0.4

ω = 6.575 Rad/s

Angular KE = 0.5 * 0.187 * 6.575²

Angular KE = 4.04 J

PE = mgh = 1.75 * 9.8 * h = 17.15h

Using the law of energy conservation

17.15h = 6.052 + 4.04

h = 10.092/17.15

h = 0.589 m

$h = Ssin \theta\\S = h/sin \theta\\S = 0.589/sin30\\S = 1.178 m\\$

Using the equation of motion

$v^{2} = u^{2} + 2as\\2.63^{2} = 0^{2} + 2a(1.178)\\6.917 =2.356a\\a = 6.917/2.356\\a =2.94 m/s^{2}$

5 0

4 years ago

A student lifts a physical science book off the table and above their head. Is there work being done?

DiKsa [7]

Answer: A force must cause a displacement in order for work to be done. A book falls off a table and free falls to the ground. Yes. This is an example of work.

Explanation:

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2 years ago

Green plants need light in order to survive. Structures in the leaves absorb light, which in turn, helps plants make their own f

Goryan [66]

The answer is green.

3 0

3 years ago

Read 2 more answers

a squirrel on a limb near the top of a tree loses it’s a grip on a nut, so that the nut slips away horizontally at a speed of 1.

Ivahew [28]

Explanation:

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3 years ago

A merchant in Katmandu sells you a solid gold 6 kg statue for a very reasonable price. When you get home, you wonder whether or

Lilit [14]

Answer:

0.000311 m³

Explanation:

The formula that connect volume, mass and density is given below

D = m/v ...................... Equation 1

Where D = Density of the gold, m = mass of the gold, v = volume of the gold.

make v the subject of the equation

v = m/D .................. Equation 2

Given: m = 6 kg,

Note the density of pure gold = 19300 kg/m².

Substitute into equation 2

v = 6/19300

v = 0.000311 m³

Hence the volume that will verify that it's a pure gold = 0.000311 m³

5 0

4 years ago