All categories

3 years ago

The contraption below has the following

Physics

1 answer:

AnnyKZ [126]3 years ago

4 0

Answer:

117.72 N

Explanation:

The given parameters are;

The mass m₁ = 2.0 × 10³ kg

The mass m₂ = 4.4 × 10² kg

The mass of the man, m₃ = 6.0 × 10 kg

The condition of the interaction of the surfaces = Frictionless surfaces

The

The tension in the string = The downward force = The weight of (m₂ + m₃) = (m₂ + m₃) × g

Let <em>a</em> represent the acceleration of the connected masses due to the weight of m₂, and m₃, we have;

(m₁ + m₂ + m₃) × a = (m₂ + m₃) × g

∴ a = (m₂ + m₃) × g/(m₁ + m₂ + m₃)

Which gives;

a = (4.4 × 10²+ 6.0 × 10) × 9.81/(2.0 × 10³+ 4.4 × 10²+ 6.0 × 10) = 1.962

The downward acceleration, a = 1.962 m/s²

The apparent weight of the man = The mass of the man, m₃ × The acceleration, <em>a</em>

∴ The apparent weight of the man = 6.0×10 kg ×1.962 m/s² = 117.72 N

You might be interested in

A 1500 kg car drives around a flat, 50 m diameter track, starting from rest. The drive wheels supply a small but steady 525 N fo

krok68 [10]

Answer:

No. of revolutions before the car slides off is 2

Solution:

As per the question:

Mass of the car, m = 1500 kg

Diameter of the track, d = 50 m

Force, F = 525 N

Coefficient of static friction, $\mu_{s} = 0.90$

Now,

The acceleration in the tangential direction is given by:

$F = ma_{T}$

$525 = 1500\times a_{T}$

$a_{T} = 0.35\ m/s^{2}$

Here, the centripetal force is given by the friction force:

$\frac{mv^{2}}{R} = \mu mg$

Thus

$v = \sqrt{\mu gR} = \sqrt{0.90\times 9.8\times 25} = 14.849\ m/s$

Time taken by the car is given by:

v = v' + at

v' = initial velocity = 0

Thus

$t = \frac{v}{a} = \frac{14.849}{0.35} = 42.426\ s$

Total Distance covered, d is given by:

$v^{2} = v'^{2} + 2ad$

$14.849^{2} = 0^{2} + 2\times 0.35d$

d = 341.99 m

Distance covered in 1 revolution is the circumference of the circle, d' = $2\pi R$

Now, the no. of revolutions is given by:

$n = \frac{d}{d'} = \frac{314.99}{2\pi \times 25} = 2$

5 0

3 years ago

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity?

Semmy [17]

They were able to find the orbit of a comet and predict the year of its return.

8 0

3 years ago

Read 2 more answers

The student moves his leg 34 cm sideways as shown.

Nana76 [90]

(i) • there is force applied to an objects

• the object moves

• the object moves in the same direction as the direction of the force

(ii) workdone = force x distance

= 23 x 34

= 782Joules

8 0

3 years ago

Read 2 more answers

How long do congressional terms last

zhannawk [14.2K]

Idkidkidkidk IDK IDK IDK IDk IDK

7 0

3 years ago

Help with 5-10 please

Zina [86]

Answer:

explained in attachment

Explanation:

explained in attachment

Download pdf

5 0

3 years ago