1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sergio039 [100]
3 years ago
15

7) T F If two forces of equal magnitude act on an object that is hinged at a pivot, the force acting farther from the pivot must

produce the greater torque about the pivot.
Physics
1 answer:
saul85 [17]3 years ago
4 0

Answer:

False

Explanation:

The torque exerted by a force is given by:

\tau=Fd sin \theta

where

F is the magnitude of the force

d is the distance between the point of application of the force and the pivot

\theta is the angle between the directions of F and d

We see that the magnitude of the torque depends on 3 factors. In this problem, we have 2 forces of equal magnitude (so, equal F). Moreover, one of the forces (let's call it force 1) acts farther from the pivot than force 2, so we have

d_1 > d_2

However, this does not mean that force 1 produces a greater torque. In fact, it also depends on the angle at which the force is applied. For instance, if the first force is applied parallel to d, then we have

\theta_1 =0\\sin \theta=0

and the torque produced by this force would be zero.

So, the statement is false.

You might be interested in
A sled is being pulled to the left by 5 dogs each dog is pulling with
xeze [42]

Answer:

Since the five forces applied are all in the same direction with the motion of the sled, to solve for the net force, add the five forces together. Therefore, the net force is 30 Newtons.

Explanation:

6 0
3 years ago
A liquid with a density of 900kg/m 3 is stored in a pressurized, closed storage tank. The tank is cylindrical with a 10m diamete
Orlov [11]

Answer:

18.62 m/s

Explanation:

Given that:

A liquid with a density of 900 kg/m 3 is stored in a pressurized, closed storage tank.

Diameter of the tank = 10 m

The absolute pressure in the tank above the liquid is 200 kPa = 200, 000 Pa

At pressure of 200 kPa   ; the final velocity = 0

Atmospheric pressure at 5cm = 101325 Pa

We are to calculate the initial velocity of a fluid jet when a 5cm diameter orifice is opened at point A?

By using Bernoulli's theorem between the shaded portion in the diagram;

we have:

Pa \ + \ \frac{1}{2} \  \delta \ v^2_1 \ + \ \delta gy_1 = P + \delta gy_2

\frac{1}{2} \  \delta \ v^2_1 \ = P + \delta gy_2 -  \ \delta gy_1  - Pa

\frac{1}{2} \  \delta \ v^2_1 \ =  \delta g(y_2 -y_1 )+   ( P   - Pa )

v_1 \ =  \sqrt{ \frac {2 \ \delta g(y_2 -y_1 )+  2  ( P   - Pa )}{\delta}}

where;

Pa = atmospheric pressure = 101325 Pa

\delta = density of liquid = 900 kg/m³

v_1 = initial velocity = ???

g = 9.8 m/s²

y_1 = height of the hole from the buttom

y_2 = height of the liquid surface from the button

v_1 \ =  \sqrt{ \frac {2*900*9.8(7 -  0.5 )+  2  ( 200,000   - 101325 )}{900}}

v_1 = 18.62 \ m/s

Thus, the initial  velocity of the fluid jet  = 18.62 m/s

3 0
3 years ago
What is the momentum of a bird with a mass of 0.015 kg flying 12 m/s?
maksim [4K]

Answer:

momentum = mass • velocity

v= 17.5/2.5

= 7 m/s

Explanation:

I TOOK THE TEST

6 0
2 years ago
Which of the following statements best characterizes the surface of the planet Mars?The surface of Mars is continuously resurfac
butalik [34]

All the big volcanoes are in the northern hemisphere of Mars, and most of the craters are in the southern hemisphere is of the following statements that best characterizes the surface of the planet Mars.


Hope this helps,

Davinia.

4 0
3 years ago
HEYYYYYY HEYYYYYYYYY
weeeeeb [17]

Answer: i dont know what is happening but I'm answering with another HEEEYYYYYYY HEYYYYYYYY

Explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • Is fire actually hot and why do we call it hot; is it a classification for when something burns you.
    9·1 answer
  • An object with a mass of 62.5 kg accelerates 12.3 m/s2 when an unknown force is applied to it. What is the amount of the force?
    6·1 answer
  • In the following reaction, identify the missing particle:
    15·1 answer
  • What is a fundamental difference between gravitational forces and electrostatic forces?
    7·1 answer
  • If you rub a balloon on your hair, you
    7·1 answer
  • I require assistance
    10·2 answers
  • What is the mass of a 50 kg person on earth?
    9·1 answer
  • The force experienced by an electron in a field between parallel plates is proportional to which of the following? Select all th
    11·1 answer
  • 1. A way of life that involves little or no physical activity is called a(n)_______
    6·1 answer
  • I need help with 03.01 Playing With Others – President's Challenge Goals
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!