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2 years ago

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3) An inclined plane rises to a height of 2 m over a distance of 6 m. Calculate: a) the angle of the slope b) the VR (and so IMA

) of the inclined plane c) the theoretical force required to push an object with a mass of 200 kg up the slope.

1 answer:

laila [671]2 years ago

4 0

Answer:

divide

Explanation:

make sure u do good at it

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Which sentence describes Newton's first law?

Marrrta [24]

$\Large{\red{\bf{\blue{\dag} Answer:-}}}$

Newton's First Law of Motion :

An object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .

Here this statement is best represented by the statement : <em>Unbalanced forces cause an object to move.</em><em> </em>[ option c ]

<u>More</u><u> to</u><u> know</u><u> </u><u>:</u><u>-</u>

Newton's 3 laws of motion :-

Newton's First Law of Motion :-

It states that an object stays in rest or in uniform motion unless and until compelled by an external unbalanced force . This is also known as " Law of Inertia " .

Ex - (i) We tend to fall backwards while standing in the bus , when it starts suddenly.

(ii) We tend to fall forward while standing in the bus , when it stops suddenly.

Newton's Second Law of Motion :-

It states that the rate of change of momentum is directly proportional to the applied force in the direction of the force . That is ∆p $\propto$ Force .

Ex - (i) When we push car & a truck with same force the car will have Greater acceleration due to less mass . (Imaginary case ).

(ii) We feel easy to push a empty cart than a full cart .

Newton's Third Law of Motion :-

It states that every action has equal and opposite reaction .

Ex - (i) We are able to walk on ground due to Newton's third law of motion .

(ii) When we push wall it also applies equal and opposite force .

8 0

3 years ago

State the<br>the properties of magnets.<br>

Zigmanuir [339]

Answer:

All magnets have two poles: the North Pole and the South Pole.

Magnets attract ferromagnetic materials such as iron, nickel, and cobalt.

The magnetic force of a magnet is stronger at its poles than in the middle.

A freely suspended magnet always points in North-South direction.

Hope this helps

4 0

3 years ago

Dump Tower is 96 stories tall. A small, 1.2-kg object is dropped over the side of the roof of the tower and accelerates toward t

laiz [17]

Answer:

6.0 s

98 m/s

Explanation:

The radius of the planet is much bigger than the height of the tower, so we will assume the acceleration is constant. Neglect air resistance.

Acceleration due to gravity on this planet is:

a = GM / r²

a = (6.67×10⁻¹¹ m³/kg/s²) (2.7 × 1.48×10²³ kg) / (1.7 × 750,000 m)²

a = 16.4 m/s²

The height of the tower is:

Δy = 96 × 3.05 m

Δy = 293 m

Given v₀ = 0 m/s, find t and v.

Δy = v₀ t + ½ at²

(293 m) = (0 m/s) t + ½ (16.4 m/s²) t²

t = 6.0 s

v² = v₀² + 2aΔy

v² = (0 m/s)² + 2 (16.4 m/s²) (293 m)

v = 98 m/s

8 0

4 years ago

Explain what would happen to the air temperature at Riverdale School if the groundwater system were used. Use the terms stabilit

Sergio039 [100]

OK.

But first we need to know . . .

-- Where is Riverdale ?

-- What is the air temperature there right now ?

-- What kind of system is being used now ?

-- Where can we get a complete description of the groundwater system ?

5 0

3 years ago

Read 2 more answers

A hawk flies in a horizontal arc of radius 12.0 m at constant speed 4.00 m/s. (a) Find its centripetal acceleration. (b) It cont

olya-2409 [2.1K]

Answer:

a) $a_c= 1.33 m/s^2$

b) a= 1.79 m/s²

θ = 41.98⁰

Explanation:

arc radius = 12 m

constant speed = 4.00 m/s

(a) centripetal acceleration

$a_c=\frac{v^2}{R}$

$a_c=\frac{4^2}{12}$

= 1.33 m/s²

(b) now we have given

$a_t= \ 1.20 m/s^2$

now,

$a=\sqrt{a^2_c+ a^2_t}$

$a=\sqrt{1.33^2+ 1.20^2}$

a= 1.79 m/s²

direction

$\theta = tan^{-1}(\frac{a_t}{a_r} )$

$\theta = tan^{-1}(\frac{1.2}{1.33} )$

θ = 41.98⁰

5 0

3 years ago