head 1.2; access; symbols; locks; strict; comment @# @; 1.2 date 2018.03.15.08.55.54; author root; state Exp; branches; next 1.1; 1.1 date 2018.03.15.07.47.09; author root; state Exp; branches; next ; desc @This document ( 4.5 Is this true in other cases also?) is re-created by administrator on 01 August 2017 @ 1.2 log @This document ( 4.5 Is this true in other cases also?) is lastly updated by administrator status:PUBLISHED on 15 March 2018 @ text @{ "_id": { "$oid": "597edc0b69602a0156a5dc40" }, "_type": "GSystem", "access_policy": "PUBLIC", "altnames": " 4.5 Is this true in other cases also?", "annotations": [], "attribute_set": [], "author_set": [ 1 ], "collection_set": [], "comment_enabled": null, "content": "
Let us do some activities.
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\r\nActivity: 1
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\r\nMaterials Required:
\r\n1. One 10 metres rope
\r\n2. Sketch pen
\r\n
\r\nProcedure:
\r\n1. Hold one end of a long string (10 metres) in your hand and ask your friend to hold the other end.
\r\n2. Mark a small portion on the string with a colour.
\r\n3. Now give a sudden jerk to the string.
\r\n\r\n\r\nDid the coloured mark change its position along the string?
\r\n
\r\n
\r\nDid you feel light and frequent jerks in your hand? Why does this happen?
Activity: 2
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\r\nYou must have floated a paper boat on water.
\r\n\r\n\r\n\r\nWhat happens to the boat when there are waves on the water surface?
\r\n
Video 4.5: Paper boat motion with the ripple
\r\n\r\n\r\n\r\n", "content_org": "", "contributors": [ 1 ], "created_at": 1501565291041, "created_by": 1, "featured": null, "group_set": [ { "$oid": "597ece6e69602a0154bb423e" }, { "$oid": "59b7e51a2c4796015b350b74" } ], "if_file": { "mid": { "id": null, "relurl": null }, "mime_type": null, "original": { "id": null, "relurl": null }, "thumbnail": { "id": null, "relurl": null } }, "language": [ "en", "English" ], "last_update": 1521123954000, "legal": { "copyright": "CC-BY-SA 4.0 unported", "license": "HBCSE" }, "location": [], "login_required": null, "member_of": [ { "$oid": "5752ad552e01310a05dca4a1" } ], "modified_by": 1, "module_set": [], "name": " 4.5 Is this true in other cases also?", "origin": [], "plural": "", "post_node": [], "prior_node": [ { "$oid": "597eceee69602a0155eda27d" } ], "property_order": [], "rating": [], "relation_set": [ { "has_admin_page": [ { "$oid": "5994109069602a01570204cc" } ] }, { "translation_of": [ { "$oid": "59980b0169602a0140b05ce2" }, { "$oid": "5998705269602a0142a58c55" } ] } ], "snapshot": { "597ece6e69602a0154bb423e": "1.1", "59b7e51a2c4796015b350b74": "1.1" }, "start_publication": null, "status": "PUBLISHED", "tags": [], "type_of": [], "url": "" }@ 1.1 log @Initial revision @ text @d50 1 a50 1 "last_update": 1521119828832, d95 2 a96 1 "597ece6e69602a0154bb423e": "1.1" @Does the boat move with the ripples?
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