A metal ball of mass 2 kg is supported by a massless inextensible string, 12 cm long. A horizontal force displaces the ball by 30oto the vertical so that the string remains taut. Find:a) the horizontal force.b) the tension in the thread.

Answers

Answer 1

Answer:

As it is given that 2 kg mass is suspended by 12 cm long thread and then a horizontal force is applied on it so that it remains in equilibrium at 30 degree angle

So here we can use force balance in X and Y directions

now for X direction or horizontal direction we can use

$F = Tsin30$

for vertical direction similarly we can say

$mg = T cos30$

so here we first divide the two equations

$(F)/(mg) = (sin 30)/(cos 30)$

$(F)/(mg) = tan 30$

$F = mg tan30$

now plug in all values in the above equation

$F = 2 * 9.8 * tan30$

$F = 11.3 N$

Part b)

now in order to find the tension in the thread we can use any above equation

$F = T sin30$

$11.3 = T sin30$

$T = (11.3)/(sin30)$

$T = 22.6 N$

so tension in the thread will be 22.6 N

Related Questions

The movement of deep ocean currents is mainly caused by:?
Apply why does a box on the seat of a car slide around on the seat when the car speeds up slows down or turns a corner?
What do you think would happen if a lamp close to the sensor was left turned on overnight?
Suppose you increase your walking speed from 6 m/s to 11 m/s in a period of 2 s. What is your acceleration?
Do waterfalls and rapids occur where rivers meet and flow over hard rocks ?

If an object has a mass of 50 kg and is accelerating at 2m/s/s, what is the force it will exert?

Answers

the formula you're looking for is Force = mass * acceleration. this means the force = 50 * 2, which is 100N

On a temperature versus time graph, how does the temperature at the beginning of a change of state compare with the temperature at the end of the change?always lower

always the same

usually lower

usually higher

Answers

Answer:

The temperature is always same.

Explanation:

The change of state of matter occurs at the constant temperature, because the heat energy given to the matter is used to change the state in this condition.

So, in the beginning and at the end of the change, the temperature remains constant.

The graph between temperature and time is a straight line parallel to time axis as shown.

Answer:

answer is B

Explanation:

What will be the effect on the loudness of sound if the amptitude is doubled and halved?

Answers

remember that
loudness is directly proportional to the square of amplitude...
so when amplitude is doubled ,,loudness increases four times..
when it is halved ,,,loudness is halved,,,

The factor being measured in an experiment is thea. Scientific law
B. Variable
C. Control
D. Hypothesis

Answers

The factor being measured in the experiment is a variable B.

1. ________ is a force that attracts all matter to each other2. When the only force affecting an object is gravity that object is in __________

Answers

1. The answer is gravity. This is the power that draws two bodies to each other, the force that causes objects to drop toward the ground and the planets to orbit the sun. The huger an object is, the tougher it’s gravitational pull.
2. The answer is free fall. This is any motion of a body where gravity is the only power performing upon it. In the setting of general relativity, where gravitation is lessen to a space-time curvature, a body in free fall has no power performing on it

What type of energy does fresh vegetables have?

Answers

Well it's energy comes from the sun since the sun gives it sunlight to help it grow

lazer light energy lots of protion helps them too they have it all

Other Questions

Barometers have long been used to predict the weather. Jay and Jeff were responsible for recording the class weather data each day in March. One day, they noticed that there was a rapid change in the barometric pressure. The barometric pressure dropped down very, very quickly. What type of weather could Jay and Jeff expect soon? A) fog B) rain C) clearing D) drop in temperature

How does a merry go round use potential and kinetic energy

How does hydroelectric energy works?

10 POINTS!!! Determine the pressure of your book in pascals (Pa). Show your work! (the pressure of the book in psi is 0.03 psi) Also the weight of the book is 3 lbsHInt: 1 Pa = 1 N/m^2 Weight (force) = ma 1 kg = 2.2 lbs 1 inch = 2.54 cm 1m = 100 cm