Mechanics | Relativity Answers

You are playing tetherball with a friend and hit the ball so that it begins to travel in a circular horizontal path. If the ball is 1.2 meters from the pole, has a speed of 3.7 m/s, a mass of 0.42 kilograms, and its (weightless) rope makes a 49° angle with the pole, find the tension force that the rope exerts on the ball just after you hit it.

Consider the radius of the Earth to be 6.38×106 m. What is the magnitude of the centripetal acceleration experienced by a
person (a) at the equator and (b) at the North Pole due to the Earth's rotation?

a boy inside a bus is moving 5.0 m/s towards the east. he is walking at 1.0m/s toward the front. what is the velocity of the boy as observed by a passenger sitting inside the bus and another passenger waiting for the bus at a nearby bus stop

Josiah, Von and Ely are standing in a strawberry field. Von is 14.0 meters due west of Josiah. Ely is 36.0 meters from Von, in a direction 37.0 degrees south of east from Von's location. How far is Ely from Josiah? What is the direction of Ely's location from that of Josiah?

A lion in a cage wakes back and forth 60 feet per min it nearly took centuries to fine a door now with modern equipment he walked 3 thousand miles feet pre minutes and 3 thousand miles by 2 thousand miles to go yet how long will it take him to cover this territory of said 3 thousand by 2 thousand miles at the above walking rate

A rough inclined plane BCE of height (25/6)m is kept on a rectangular wooden block ABCD of height 10 m. as shown in the figure. A small block is allowed to slide down from the top E of the inclined plane. The coefficient of kinetic friction between the block and the inclined plane is 18 and the angle of inclination of the inclined plane is sin−1(0.6). If the small block finally reaches the ground at point F. then DF=? (AB=10m)
E
I\
I \
I \
| \
| \
I \
B I-----------C
I I
I I
I I
A |............|D............E

1. An ideal fluid flows at 15.5ms^-1 in a horizontal pipe down the line, the pipe diameter changes to 1/3 of its original diameter what is the flow speed of the fluid in this section if the original diameter of the pipe was 6m?

Two particles P and Q each of mass 3m lie at rest oil the X-axis at points (−a.0) and (+a,0) respectively. A third particle R of mass 2m initially at the origin moves towards particle Q. If all the collisions of the system of 3 particles are elastic and head-on. the total number of collisions in the system is
And 2

A rough inclined plane BCE of height (256)m is kept on a rectangular wooden block ABCD of height 10 m. as shown in the figure. A small block is allowed to slide down from the top E of the inclined plane. The coefficient of kinetic friction between the block and the inclined plane is 18 and the angle of inclination of the inclined plane is sin−1(0.6). If the small block finally reaches the ground at point F. then DF = ?
(Acceleration due to gravity = 10ms−2
Ans20/3

Two vectors 10N and 8N of bearing 285° and N70°E respectively. Find the resultant force using triangle of vectors.