A ladder 5 m long standing on a horizontal floor

Asked by admin @ 04/08/2021 in English viewed by 323 People

A ladder 5m long standing on a horizontal floor leans against a vertical wall. If the top slides downward at the rate of 10 cm/sec, find the rate at which the angle between the floor and the ladder is dec

reasing when the lower end of the ladder is 2 m. from the wall.

Answered by admin @ 04/08/2021

angle will=90°it self because .

the angle will be incedence.

Then subtitued it by 2m.

A ball with a horizontal speed of 1.25 m/s rolls off a bench 1.00 m above the floor.

Asked by maham237 @ 25/12/2020 in Physics viewed by 307 persons

A ball with a horizontal speed of 1.25m/s rolls off a bench 1.00m above the floor. Part A How long will it take the ball to hit the floor? Part …

A 3.0 m long ladder leans against a frictionless wall

Asked by admin @ 04/12/2021 in Physics viewed by 449 persons

A 6 m long, uniform ladder leans against a frictionless wall and makes an angle of 74.3 ◦ with the floor. The ladder has a mass 25.8 kg. A 67.08 …

A saree is 5 m long

Asked by admin @ 24/08/2021 in Math viewed by 320 persons

a saree is 5m long and 1.25m wide a border of 25 cm is printed along the four sides. find the cost of printing the border at 30 paise per …

A mass m moving horizontally with velocity v collides

Asked by admin @ 17/08/2021 in Physics viewed by 316 persons

A mass m moving horizontally along x axis with velocity v collides and sticks to a mass of 3m moving vertically upwards with its velocity 2v. The final velocity of …

Two trains are each 50 m long moving parallel

Asked by admin @ 20/08/2021 in Physics viewed by 308 persons

Two trains are each 50m long moving parallel towards each other at speeds 10m/s and 15m/s respectively, at what time will they pass each other

How long did m hamel teach in his school

Asked by admin @ 20/08/2021 in English viewed by 391 persons

How long did M hamel teach in his school?

A plastic box 1.5 m long 1.25 m wide

Asked by admin @ 17/08/2021 in Math viewed by 285 persons

A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. It is opened at the top. Ignoring the thickness of the plastic sheet, …

A body of mass m rests on horizontal surface

Asked by admin @ 17/08/2021 in Physics viewed by 288 persons

a body of mass m rests on horizontal surface. the coefficient of friction between the body and the surface is u. If the mass is pulled by a force P …

A swimming pool is 20 m long and 10m wide

Asked by admin @ 04/08/2021 in Math viewed by 304 persons

A swimming pool is 20m long,10m wide and 2m deep . what volume of water does it contain

A body of mass m and radius r rolling horizontally

Asked by admin @ 04/08/2021 in Physics viewed by 373 persons

A body of mass M and radius R rolling horizontally without slipping at a speed V climber ramp of height 3v^2/4g. The rolling body can be.........

A long horizontal wire p which is rigidly fixed

Asked by admin @ 23/08/2021 in Physics viewed by 283 persons

A long horizontal wire is rigidly fixed and carries 100A current. An another wire of linear mass density 2 x 10-kg/m placed below and parallel to the fixed wire. If …

A 1.5 m tall boy is standing at some distance

Asked by admin @ 02/08/2021 in Math viewed by 308 persons

A 1.5 m tall boy is standing at some distance from a 30 m tall building.The angle of elevation from his eyes to the top of the building increases from …